Cylinder printing-machine



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G. P. FENNBR. CYLINDER PRINTINGr MACHINE.

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. G. P. FENNER.

CYLINDER PRINTING MACHINE.

- No. 407,652. Patented July 23, 1889.

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UNITED STATES PATENT OEEICE.

GEORGE P. FENNER, OF NENVLONDON, CONNECTICUT.

CYLINDER.PRINTING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 407,652, dated July 23,1889. A Application iiled September 27, l888. Serial No. 286,505. (Nomodel.)

To aZZwr/om it may concern,.-

Beit known that I, GEORGE P. FENNEE, a citizen of the United States,residing at New London, in the county of New London and State ofConnecticut, have invented new and useful Improvements in CylinderPrinting- Machines, of which the following is a specification.

This invention relates to an improvement in printing-presses, as setforth in the following specification and claims, and illustrated in theaccompanying drawings, in which- Figure l is a side elevation of aprintingpress, parts being broken away. Fig. 2 is a front elevation ofsaid printing-press.

Similar letters indicate corresponding parts.

In thedrawings, the letter A Vindicates a driving-shaft having pulleysI3 B-one fast, the other loose-mso that the driving-shaft can beactuated or allowed to Colne to rest in the usual way. A gear-wheel Ccommunicates motion from the driving-shaft to the gearwheel D. A crankor crank-pin E is rotated by the gear D. To the crank E is connected alink F, having a pin or stud G, engaging a cam H, iixed to theapparatus. The cam II has portions I I, Fig. l, which are formed as arcsof circles the radii of which are equal to the distance from the pointof oscillation of the link K, on the gear-wheel L, to the edges of theportions I I. The crank E, continuously rotating, 'carries the stud Gabout in the way of the cam II, and as saidstud G arrives at the end ofa stroke it passes along the cam portions I and does not begin itsreturn-stroke until it has passed such portion I. The stud G connects bya link K with the' gear-wheel L, and said stud and link cause said wheelL to move back and forth along the rack M, so that said wheel L, throughthe rack N, reciprocates the type-bed O. As the type-bed arrives at theend of a stroke, the stud G enters a portion I of the cam H, and thereturn-stroke of the bed O does not commence cam X, by means of a linkZ, is shifting the gears R S, so as to throw the gear R int-o gear withthe rack Q and gear W, and to throw the gear S out of gear with the rackQ and gear V The gear-wheels R S engage one another, and are mounted ina frame T, adapted to oscillate about the pivot U. The frame T has alink Z, the lugs or rollers Y of which engage a cam X on the shaft ofthe gear D.

The operation of the device is as follows: The parts being in theposition shown in Fig. l, a sheet fed off the feed-board a is about tobe carried between the impression-cylinderP and the type-bed O. .i Therack Q being in gear with the wheel R and out of gear with the wheel S,the motion of the rack Q in the direction of arrow l will rotate thegear R, so as to rotate the gear IV and cylinder P in the direction ofarrow 2. During this action of the gear R, the gears S V rotate idly,and said gears are not in gear with one another. Then the type-bed O hasarrived at the end of its stroke and remains for a moment at rest, the

cam X shifts or oscillates the frame T, so as y to move the wheel R outof gear with the rack Q and gear W and to move the wheel S into gearwith the rack Q and gear V. The rack Q and the type-bed O, now makingtheir return stroke in the direction opposed to arrow l, the rack Q willrotate the wheels S V WV, so that the impression-cylinder P again moves'in the direction of arrow 2. It will thus be noticed that the cylinder Pis made to rotate in the saine direction at each reciprocation of thetype-bed O. The cylinder P receiving its motion from the type-bed O, thecylinder P will remain for a moment at rest as the bed O remains for amoment at rest at the endA of each stroke of the bed. Time is thus givenfor properly feeding a sheet off the board a, and jarring of themechanism, which might occur by a sudden change of motion, is avoided.The type-bed O and cylinder P remain continually geared together eitherby the gear R engaging the rack Q and gear NV, or by the gear S engagingthe rack Q and gear V. The construction of the press is thus simplified,as no mechanism is required for throwing the impression-cylinder attimes into gear with the type-bed and for holding the cylinder at othertimes out of gear with the bed. The

gear V, as seen in Fig. 1, remains constantly IOO in gear with the gearXV, and the gears R S, as is seen in Fig. 2, are so wide that they meshinto both the rack Q and into the gear lV or V, as the case may be.

Vhat I claim as new, and desire to secure by Letters Patent, is-

l. The combination, with a reciprocating type-bed and animpressioli-cylinder, of an actuating crank or wheel E, link K, gears LM, connecting the crankA or wheel and typebed, and a guide-cani ll,guiding said link and constructed to allow the type-bed to remaintemporarily at rest at the end of each reciprocation, substantially asdescribed.

2. The combination, with a reciprocating typeebed and animpression-cylinder, of shift-

